Block-printing machine.



G. PRIFOLD.

BLOCK PRINTING MACHINE.

APPLlCATiON FILED NOV. 17, 1915.

1 gfl i 3 1 2. Patented Nov. 7, 1916.

2 SHEETS-SHEET l- G. PRIFOLD. BLOCK PRINTING MACHINE. APPLICATION FI,LEDNOV-l7, 1915.

Patented Nov 7, 1916.

2 SHEETS-SHEET 2.

LQQQBJL.

tWrnn srnrns PATENT GEORGE PRIFOLD, LINWOOD, PENNSYLVANIA, ASSIGNOR, BYMESNE ASSIGNMENTS, T0 UNITED ROOFING &'1VIANUFACTURING COMPANY(DEPARTMENT OF BARRETT MANUFACTURING COMPANY), OF WILMINGTON,DELAVJ'ARE, A CORPORATION OF DELAWARE.

BLOCK-PRINTING MACHINE.

Specification of Letters Patent.

Patented fiov. 2', lgffi.

Application filed November 17, 1915. Serial No. 62,007.

To all whom it may concern Be it known that I, Gnoncn PRIroLn, acitizenof the United States, and a resident of Linwood, county of Delaware,State of Pennsylvania, have invented certain Tmprovements inBlock-Printing Machines, of which the following is a specification.

My invention relates to certain improvements in block printing machinesfor printing rugs and like materials.

The object of my invention is to improve the means for governing theseveral printing block carriers so that certain blocks will make animpression at a given time as die-- tated by the mechanism which is setfor a given type, size, or color of rug, and Which acts automatically toselect the blocks as the material is fed through the machine.

In the accompanying drawings: Figure 1 is a side view of sufficient ofablock printing machine to illustrate my invention; Fig. 2 is anenlarged view, partly in section, illustrating the action of one of thepin wheels; Fig. 3 is a plan View of a pin wheel taken on the line a:a,Fig. 2; Fig. 4: is a detached perspective view of the latch; Fig. 5 is adetached perspective view of one of the pins; and Fig. 6 is a Viewillustrating a modification.

Referring to the drawings, 1 is the frame of the machine having guides 2arranged a given distance apart for the several carriers 3 on which theprinting blocks at are mounted. On each carrier are rollers 5 with whichthe cams 6 engage which raise the carriers and allow them to descend sothat the block can make an impression. The cams 6 are mounted ontransverse shafts 7 driven in any suitable manner from a power shaft atone end of the machine. In the present instance, a longitudinal shaft 9is geared to the power shaft and to the several cam shafts 7.

10, 10 are weighted latches for holdlng theprinting block carriers outof action. These latches are pivoted to the main frame and engageportions 11 of the carriers, as shown. The lifting cam 6 for thecarriers each have a raised portion 8, which lifts the carrier higherthan the engaging portion of the latch so as to allow the latch to swingunder the portion 11 of the carrier and also to allow the latch to bewithdrawn when the block is to make an impression.

Loosely mounted on each cam shaft 7 is a pin wheel 13, and in thepresent instance, on the hub of this wheel are two sprocket wheels 12.In the rim of the pin wheel is a series of threaded openings for thereleasing pins 1%, which engage a projection 15 on the latch 10. In thepresent instance, each pin is made as shown in Fig. 5 and has a threadedshank adapted to the threaded opening in the Wheel 13. The mechanism isso timed that a pin 14 will strike the latch when the high portion 8 ofthe lifting cam 6 is in. contact with the roller 5 and, as the camturns, the portion 11 of the carrier drops below the latch and thecarrier follows the cam until the block makes an impression, in when itis again raised by the cam and as the high portion comes under. theroller the weighted latch will swing into engagement with the portion 11of the carrier until it is again released.

16, 16 are the drive chains adapted to the sprocket wheels, as shown, sothat the pin wheels will'turn in unison. On a driving". shaft 19 is asprocket wheel 18 around which passes a chain 20 from asprocket wheel 17on the hub of the pin wheel of the first printing section. Other meansof driving the pin wheels may be adopted, if desired, and, in Fig. 6, Ihave illustrated a longitudinal driving shaft 16 geared to the pin wheel13.

In operation, the fabric, or other material, to be printed is fedintermittently through the machine in the ordinary manner, the amount ofthe feed being equal to the width as of the face of the printing blocks.The pins 14 are set on their wheels 13 so that certain of the blockswill be released and will make the impression at a given time, accordingto the size of the rug and the number as of colors used.

When a fixed pattern is being printed the pins may be formed integralwith the wheel and they may be located on the periphery,

as shown, or at the side, if desired. AM:

I claim:

1. The combination in a block printing machine, of a frame; a series ofblock carriers thereon; means for reciprocating the the carrier; andmeans for driving the several Wheels.

2. The comblnation m a block printing inachlne, of a frame; a series ofprinting [0 block carriers; a cam shaft and cams for each carrier; asprocket Wheel'and connected pin Wheel loose on each shaft, oneor morepins'on the wheels; a latch for holding each carrier out of action, saidlatch being in "the path of one of the pin wheels which is ar-* rangedto move the latch away from the carrier; and chains for driving theseveral sprocket Wheels and pm Wheels 1n unison.

GEORGE PRIFOLD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0."

